Okay, I just called the Grand Californian out of curiosity and I was correct. Their rooms with the bunk beds do have a trundle under the bottom bunk. So, there could be three beds for the kids and a bed for you and DH.
DD and I stayed at the DLH last month and had a room with 2 queen beds. We did not even have a sofa to make a day bed out of. I know I have heard that some of their rooms have day beds just not sure how many. The DLH was nice but my 8 year old DD requested we stay at the GCH on our next trip.
She and I both LOVED the close proximity of the GCH to the parks and DTD. It is the newest resort and with the decrease in points I think it is a good use of points. I have nothing bad to say about the DLH because it was nice too! We used the monorail a lot and the Neverland pool was nice. The koi ponds were beautiful!
I do have to say that the GCH has a kids club in case you and DH want a nice dinner alone. We are going to eat at Napa Rose one night and DD will be in Pinocchio's Workshop. The fee is $7 per hour and is only for guests staying at the GCH.
I will know more in couple of weeks after we have stayed at the GCH.